This is a comprehensive hacking guide for the US version of Contra on the NES. This document is meant for hackers and programmers who are interested in learning about the inner workings of Contra.
The document covers these aspects of the game:
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This document is designed to help people with the grand art of rom corrupting. For those of you who don’t know (you know who you are!), rom corrupting is a long, (occasionally)boring process of finding data in a Rom. If you don’t know what ….

Unlike ROMs, PC games might not all use the same formats and file types. As such, there is no single jack-of-all-trades method of patching games. ROMs are a different story; they are made of just a single file, and formats such as IPS and NINJA are a….

Crystal Mines is a game by Color Dreams, a unlicensed game company that sold games back in the late 80s, early 90s. This is the source code for the entire game released by Daniel Lawton, the owner of the source code and Color Dreams. The programmer a….